1.照相选相册，裁剪的 library TakePhoto
https://github.com/crazycodeboy/TakePhoto

2几行代码快速集成二维码扫描功能
https://github.com/yipianfengye/android-zxingLibrary

3.仿ios移动按钮
https://github.com/kyleduo/SwitchButton
https://github.com/zcweng/ToggleButton

4.自定义Android崩溃界面：CustomActivityOnCrash
https://github.com/Ereza/CustomActivityOnCrash

5.创建Android抽屉布局的库：MaterialDrawer
https://github.com/mikepenz/MaterialDrawer

6.android photoview 图片放大缩放功能 ImageView
https://github.com/chrisbanes/PhotoView

7.仿ios的dialog
https://github.com/saiwu-bigkoo/Android-AlertView

8.glide-transformations——为Glide提供图像转换的Android类库
https://github.com/wasabeef/glide-transformations

9.GlidePalette 一个可以在Glide加载时很方便使用Palette的库。
https://github.com/florent37/GlidePalette

10.流式布局
https://github.com/hongyangAndroid/FlowLayout

11.Android开发人员不得不收集的代码 工具类
https://github.com/huangkunkun/AndroidUtilCode

12.logger 常用log工具
https://github.com/orhanobut/logger

13.joda-time 日期的替代使用库
https://github.com/JodaOrg/joda-time

14.Fragmentation fragment替代库 外加 仿边缘返回
https://github.com/YoKeyword/Fragmentation

15.FlycoTabLayout 仿TabLayout ，有指示器
https://github.com/H07000223/FlycoTabLayout

16.BaseRecyclerViewAdapterHelper 强大的recyclerview的adapter
https://github.com/CymChad/BaseRecyclerViewAdapterHelper

17.节操播放器 底层为哔哩哔哩的开源播放器
https://github.com/lipangit/JieCaoVideoPlayer

18.选择器
仿ios
https://github.com/saiwu-bigkoo/Android-PickerView
扁平风格
https://github.com/gzu-liyujiang/AndroidPicker

19.网络框架
NoHttp
https://github.com/yanzhenjie/NoHttp
okgo
https://github.com/jeasonlzy/okhttp-OkGo